Effective adsorption and collection of cesium from aqueous solution using graphene oxide grown on porous alumina

Abstract

Graphene oxide (GO) with a large surface area was synthesized by the direct growth of GO on porous alumina using chemical vapor deposition to study the Cs adsorption mechanism in aqueous solutions. Electronic structure analysis employing in situ near-edge X-ray absorption fine structure spectroscopy and X-ray photoelectron spectroscopy measurements clarifies the Cs atoms bond via oxygen functional groups on GO in the aqueous solution. The Cs adsorption capacity was found to be as high as 650-850 mg g %1 , which indicates that the GO/porous alumina acts as an effective adsorbent with high adsorption efficiency for radioactive nuclides in aqueous solutions.

Nanoporous Anodic Alumina Photonic Crystals for Optical Chemo- and Biosensing: Fundamentals, Advances, and Perspectives

“…However, the deposition of multicomponent films by CVD is limited by due to different vaporization rates of precursors [ 166 ]. CVD is commonly used to grow nanotubes and nanowires based on semiconductor materials, carbons, and polymers [ 167 , 168 , 169 , 170 ]. CVD is also employed for the formation of silane monolayers onto NAA as an alternative modification to conventional wet chemistry approaches due to its high reproducibility, reduced chance of particle contamination, and silanol oligomerization [ 171 ].…”